Hey, I was wondering if anyone out there knows of any new routes that aren't listed in the old guidebook at Devil's Lake.

There are a few, but most are variations and the like. This very topic recently came up over on moutainproject, you can read the response here. There have been a lot of new first leads in the past year and a half or so, but not any on new routes that I'm aware of; they were old TR problems.